<template>
  <a-drawer
    title="修改按钮"
    :maskClosable="false"
    width="650"
    placement="right"
    :closable="false"
    @close="onClose"
    :visible="buttonEditVisiable"
    style="height: calc(100% - 55px);overflow: auto;padding-bottom: 53px;"
  >
    <a-form :form="form">
      <a-form-item label="按钮名称" v-bind="formItemLayout">
        <a-input
          v-decorator="[
            'menuName',
            { rules: [{ required: true, message: '按钮名称不能为空' }, { max: 10, message: '长度不能超过10个字符' }] }
          ]"
        />
      </a-form-item>
      <a-form-item label="相关权限" v-bind="formItemLayout">
        <a-input v-decorator="['perms', { rules: [{ max: 50, message: '长度不能超过50个字符' }] }]" />
      </a-form-item>
      <a-form-item label="上级菜单" style="margin-bottom: 2rem" v-bind="formItemLayout">
        <a-tree
          :key="menuTreeKey"
          :checkable="true"
          :checkStrictly="true"
          @check="handleCheck"
          @expand="handleExpand"
          :expandedKeys="expandedKeys"
          :defaultCheckedKeys="defaultCheckedKeys"
          :treeData="menuTreeData"
        >
        </a-tree>
      </a-form-item>
    </a-form>
    <div class="drawer-bootom-button">
      <a-dropdown style="float: left" :trigger="['click']" placement="topCenter">
        <a-menu slot="overlay">
          <a-menu-item key="1" @click="expandAll">展开所有</a-menu-item>
          <a-menu-item key="2" @click="closeAll">合并所有</a-menu-item>
        </a-menu>
        <a-button> 树操作 <a-icon type="up" /> </a-button>
      </a-dropdown>
      <a-popconfirm title="确定放弃编辑？" @confirm="onClose" okText="确定" cancelText="取消">
        <a-button style="margin-right: .8rem">取消</a-button>
      </a-popconfirm>
      <a-button @click="handleSubmit" type="primary" :loading="loading">提交</a-button>
    </div>
  </a-drawer>
</template>
<script>
const formItemLayout = {
  labelCol: { span: 3 },
  wrapperCol: { span: 18 }
};
export default {
  name: 'ButtonEdit',
  props: {
    buttonEditVisiable: {
      default: false
    }
  },
  data() {
    return {
      loading: false,
      formItemLayout,
      form: this.$form.createForm(this),
      menuTreeKey: +new Date(),
      button: {},
      checkedKeys: [],
      expandedKeys: [],
      defaultCheckedKeys: [],
      menuTreeData: []
    };
  },
  methods: {
    reset() {
      this.loading = false;
      this.menuTreeKey = +new Date();
      this.expandedKeys = this.checkedKeys = this.defaultCheckedKeys = [];
      this.button = {};
      this.form.resetFields();
    },
    onClose() {
      this.reset();
      this.$emit('close');
    },
    handleCheck(checkedKeys) {
      this.checkedKeys = checkedKeys;
    },
    expandAll() {
      this.expandedKeys = this.allTreeKeys;
    },
    closeAll() {
      this.expandedKeys = [];
    },
    handleExpand(expandedKeys) {
      this.expandedKeys = expandedKeys;
    },
    setFormValues({ ...menu }) {
      this.form.getFieldDecorator('menuName');
      this.form.setFieldsValue({ menuName: menu.text });
      this.form.getFieldDecorator('perms');
      this.form.setFieldsValue({ perms: menu.permission });

      this.defaultCheckedKeys.push(menu.parentId);
      this.checkedKeys = this.defaultCheckedKeys;
      this.expandedKeys = this.checkedKeys;
      this.button.menuId = menu.id;
    },
    handleSubmit() {
      let checkedArr = Object.is(this.checkedKeys.checked, undefined) ? this.checkedKeys : this.checkedKeys.checked;
      if (!checkedArr.length) {
        this.$message.error('请为按钮选择一个上级菜单');
        return;
      }
      if (checkedArr.length > 1) {
        this.$message.error('最多只能选择一个上级菜单，请修改');
        return;
      }
      this.form.validateFields((err, values) => {
        if (!err) {
          this.loading = true;
          let button = this.form.getFieldsValue();
          button.parentId = checkedArr[0];
          // 0 表示菜单 1 表示按钮
          button.type = '1';
          button.menuId = this.button.menuId;
          this.$put('menu', {
            ...button
          })
            .then(() => {
              this.reset();
              this.$emit('success');
            })
            .catch(() => {
              this.loading = false;
            });
        }
      });
    }
  },
  watch: {
    buttonEditVisiable() {
      if (this.buttonEditVisiable) {
        this.$get('menu', {
          type: '0'
        }).then(r => {
          this.menuTreeData = r.data.data.rows.children;
          this.allTreeKeys = r.data.data.ids;
          this.menuTreeKey = +new Date();
        });
      }
    }
  }
};
</script>
